| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.keyguard.clock; |
| |
| import android.content.ContentProvider; |
| import android.content.ContentValues; |
| import android.database.Cursor; |
| import android.database.MatrixCursor; |
| import android.graphics.Bitmap; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.os.ParcelFileDescriptor; |
| import android.os.ParcelFileDescriptor.AutoCloseOutputStream; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.systemui.Dependency; |
| |
| import java.io.FileNotFoundException; |
| import java.util.List; |
| import java.util.function.Supplier; |
| |
| /** |
| * Exposes custom clock face options and provides realistic preview images. |
| * |
| * APIs: |
| * |
| * /list_options: List the available clock faces, which has the following columns |
| * name: name of the clock face |
| * title: title of the clock face |
| * id: value used to set the clock face |
| * thumbnail: uri of the thumbnail image, should be /thumbnail/{name} |
| * preview: uri of the preview image, should be /preview/{name} |
| * |
| * /thumbnail/{id}: Opens a file stream for the thumbnail image for clock face {id}. |
| * |
| * /preview/{id}: Opens a file stream for the preview image for clock face {id}. |
| */ |
| public final class ClockOptionsProvider extends ContentProvider { |
| |
| private static final String TAG = "ClockOptionsProvider"; |
| private static final String KEY_LIST_OPTIONS = "/list_options"; |
| private static final String KEY_PREVIEW = "preview"; |
| private static final String KEY_THUMBNAIL = "thumbnail"; |
| private static final String COLUMN_NAME = "name"; |
| private static final String COLUMN_TITLE = "title"; |
| private static final String COLUMN_ID = "id"; |
| private static final String COLUMN_THUMBNAIL = "thumbnail"; |
| private static final String COLUMN_PREVIEW = "preview"; |
| private static final String MIME_TYPE_PNG = "image/png"; |
| private static final String CONTENT_SCHEME = "content"; |
| private static final String AUTHORITY = "com.android.keyguard.clock"; |
| |
| private final Supplier<List<ClockInfo>> mClocksSupplier; |
| |
| public ClockOptionsProvider() { |
| this(() -> Dependency.get(ClockManager.class).getClockInfos()); |
| } |
| |
| @VisibleForTesting |
| ClockOptionsProvider(Supplier<List<ClockInfo>> clocksSupplier) { |
| mClocksSupplier = clocksSupplier; |
| } |
| |
| @Override |
| public boolean onCreate() { |
| return true; |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| List<String> segments = uri.getPathSegments(); |
| if (segments.size() > 0 && (KEY_PREVIEW.equals(segments.get(0)) |
| || KEY_THUMBNAIL.equals(segments.get(0)))) { |
| return MIME_TYPE_PNG; |
| } |
| return "vnd.android.cursor.dir/clock_faces"; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, |
| String[] selectionArgs, String sortOrder) { |
| if (!KEY_LIST_OPTIONS.equals(uri.getPath())) { |
| return null; |
| } |
| MatrixCursor cursor = new MatrixCursor(new String[] { |
| COLUMN_NAME, COLUMN_TITLE, COLUMN_ID, COLUMN_THUMBNAIL, COLUMN_PREVIEW}); |
| List<ClockInfo> clocks = mClocksSupplier.get(); |
| for (int i = 0; i < clocks.size(); i++) { |
| ClockInfo clock = clocks.get(i); |
| cursor.newRow() |
| .add(COLUMN_NAME, clock.getName()) |
| .add(COLUMN_TITLE, clock.getTitle()) |
| .add(COLUMN_ID, clock.getId()) |
| .add(COLUMN_THUMBNAIL, createThumbnailUri(clock)) |
| .add(COLUMN_PREVIEW, createPreviewUri(clock)); |
| } |
| return cursor; |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues initialValues) { |
| return null; |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| return 0; |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| return 0; |
| } |
| |
| @Override |
| public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { |
| List<String> segments = uri.getPathSegments(); |
| if (segments.size() != 2 || !(KEY_PREVIEW.equals(segments.get(0)) |
| || KEY_THUMBNAIL.equals(segments.get(0)))) { |
| throw new FileNotFoundException("Invalid preview url"); |
| } |
| String id = segments.get(1); |
| if (TextUtils.isEmpty(id)) { |
| throw new FileNotFoundException("Invalid preview url, missing id"); |
| } |
| ClockInfo clock = null; |
| List<ClockInfo> clocks = mClocksSupplier.get(); |
| for (int i = 0; i < clocks.size(); i++) { |
| if (id.equals(clocks.get(i).getId())) { |
| clock = clocks.get(i); |
| break; |
| } |
| } |
| if (clock == null) { |
| throw new FileNotFoundException("Invalid preview url, id not found"); |
| } |
| return openPipeHelper(uri, MIME_TYPE_PNG, null, KEY_PREVIEW.equals(segments.get(0)) |
| ? clock.getPreview() : clock.getThumbnail(), new MyWriter()); |
| } |
| |
| private Uri createThumbnailUri(ClockInfo clock) { |
| return new Uri.Builder() |
| .scheme(CONTENT_SCHEME) |
| .authority(AUTHORITY) |
| .appendPath(KEY_THUMBNAIL) |
| .appendPath(clock.getId()) |
| .build(); |
| } |
| |
| private Uri createPreviewUri(ClockInfo clock) { |
| return new Uri.Builder() |
| .scheme(CONTENT_SCHEME) |
| .authority(AUTHORITY) |
| .appendPath(KEY_PREVIEW) |
| .appendPath(clock.getId()) |
| .build(); |
| } |
| |
| private static class MyWriter implements ContentProvider.PipeDataWriter<Bitmap> { |
| @Override |
| public void writeDataToPipe(ParcelFileDescriptor output, Uri uri, String mimeType, |
| Bundle opts, Bitmap bitmap) { |
| try (AutoCloseOutputStream os = new AutoCloseOutputStream(output)) { |
| bitmap.compress(Bitmap.CompressFormat.PNG, 100, os); |
| } catch (Exception e) { |
| Log.w(TAG, "fail to write to pipe", e); |
| } |
| } |
| } |
| } |